The Oslo experience with arthritis registries.
D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000453:epidemiology* / Q000628:therapy; D003131:Combined Modality Therapy / Q000379:methods; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009664:Norway / Q000453:epidemiology; D012042:Registries; D012307:Risk Factors; D012720:Severity of Illness Index; D017678:Sex Distribution; D016896:Treatment Outcome